EZProxy and LDAP

I’ve been dealing with a lot of off-campus access problems and dreaming of having my own ezproxy server.  I was thinking that the best way to sell it is as part of single sign-on (ie students only have to use one login).  So I found an OCLC page on using EZProxy with LDAP.  That reminded me that OCLC is trying to take over the library world (they just purchased the rights to EZProxy.  I hope they don’t try to make users pay for it.